Spring-roller for window-shades.



PATENTED JAN. 2, 1906.

H. R. DERBY. SPRING ROLLER FOR WINDOW SHADES. APPLICATION FILED MAY2,1905.

HzmZdflDerby, lnventcr glllllllglllll Attorneys Witnesses UNITED STATES PATENT OFFICE.

HAROLD R. DERBY, OF JERSEYVILLE, ILLINOIS, ASSIGNOR TO SYLVANUS L. HILL, OF JERSEYVILLE, ILLINOIS.

Specification of Letters Patent.

Patented Jan. 2, 1906.

Application filed May 2,1905. Serial No. 258,522.

10 all whom it may concern.-

Be it known that I, HAROLD R. DERBY, a citizen of the United States, residing at Jerseyville, in the county of Jersey and State of Illinois, have invented a new and useful Spring-Roller for Window-Shades, of which the following is a specification.

This invention relates to spring-rollers for window-shades, rolling screens, and the like, and has for its object to provide novel mechanism for conveniently winding the spring without removing the roller from the rollerbracket.

With this and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is a front elevation of a window equipped with rolling screens having the winding mechanism of the present invention applied thereto. Fig. 2 is an enlarged sectional view taken through the spring-pintle end of the roller and the adjacent roller-bracket. Fig. 3 is an end elevation of Fig. 2.

Like characters of reference designate cor responding parts in each and every figure of the drawings.

The roller 1 of the present invention is of the ordinary type, and has the usual longitudinal bore or chamber 2 in one end thereof for the reception of the rotatable rod 3, around which is wound a helical sprin 4, having one end connected to the rod an its other end connected to the roller. end of the rod is reduced to form a pintle 5, which projects beyond the adjacent end of the roller.

For the support of the pintle 5 there is any appropriate form of bracket, preferably of the ordinary form of roller-brackets including a shank 6, having an attaching-flange 7 at the rear end thereof; but instead of havin a notch in the upper edge of the bracket $01 the reception of the pintle 5 the shank of the bracket is provided with a circular opening 8,

The outer I in whichthe journal 5 is received and capable of rotating.

Upon that portion of the pintle 5 which projects through the bracket there is a crankarm 9, which is provided with a pair of spaced fingers 10, snapped into a perforation 11, formed in the pintle at the outer side of the bracket, whereby the crank is pivotally connected to the pintle, and the length of the space between the spring-fingers 10 is sufiicient to permit of the crank arm being swung around the outer end of the pintle from one side to the o posite side thereof. At the outer extremity of the arm there is a lateral projection or pin 12, which constitutes a handle or finger-grasp and is capable of engaging a seat or opening 13, formed in the bracket in rear of the bearing-arm 8, thereby to hold the pintle against rotation.

A helical spring 14 embraces the pintle between the bracket and the roller, with its ends bearing against said members, but not connected thereto, the expanding tension of the s ring operating to maintain the roller at the imit of its endwise movement away from the bracket 6, whereby the projection 12 of the crank 9 is maintained in the opening 13 of the bracket, so as to prevent accidental displacement of the crank from the bracket.

When the present device is in usesay, for instance, in connection with rolling windowscreens (shown at 15 and 16 in Fig. 1 of the drawings the spring of the roller maybe conveniently wound up by turning the pintle 5 and the rod 3 by means of the crank-arm 9, and when the spring has been sufficiently wound the crank-arm is swung around and its handle or projection 12 engaged with the seat or perforation 13 in the bracket 6, there by, to lock the rod against rotation. When the window-sash 17 is moved upwardly, the upper screen 15, which is connected to the sash, of course, winds upon the roller which is rotated by the spring 4, while the lower screen 16 unwinds from its roller.

Having thus described the invention,what is claimed is 1. The combination of a roller. having a spring-controlled pintle, a roller-bracket having a bearing-opening in which the pintle is capable of turning, and a combined winding and locking crank pivotally carried by the pintle and capable of being turned into engagement with the roller-bracket to prevent rotation of the pintle.

2. The combination of a roller having a spring-controlled pintle, a roller-bracket having an opening in which the pintle is capable of turning, and a combined winding and looking crank straddling the outer end of the pintle and pivotally connected thereto and also capable of being turned into locked engagement with the bracket to prevent rotation of the pintle.

3. The combination of a roller having a spring-controlled pintle, a roller-bracket having an opening in which the pintle is capable of turning and also provided with a seat, and a combined winding and locking crank pivotally carried by the pintle to swing from one side to the other and having a projection caable of entering the seat in the bracket to ock the pintle against rotation.

4. The combination of a roller having a spring-controlled pintle, a roller-bracket having a bearing-opening in which the pintle is capable of rotating and also provided with a seat, and a combined winding and locking crank straddling the outer end of the pintle and capable of being turned from one side to the other thereof, the crank being provided with a projection capable of engaging the seat of the bracket to lock the pintle against rotation.

5. The combination of a roller having a spring-controlled pintle, a bracket having an opening in which the pintle is capable of rotating, a combined winding and locking crank pivotally carried by the pintle and capable of being turned into locked engagement with the bracket, and a helical spring embracing the pintle between the bracket and the roller and bearing against these members to maintain the roller at the limit of its endwise movement away from the bracket to hold the crank in engagement with the bracket.

6. The combination of a roller having a spring-controlled pintle, a bracket having an opening in which. the pintle is capable of rotating, a combined winding and locking crank pivotally carried by the pintle and capable of being turned into locked engagement with the bracket, and a spring to main tain the roller at the limit of its endwise movement from the bracket to detachably maintain the crank in locked engagement with the bracket.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

HAROLD R. DERBY.-

Witnesses:

M. E. BAYLEY, G. M. EATON. 

